Signs for lady parts cancer??

Is all of a sudden not having periods a sign of cancer in my lady parts? It runs really high in my family. My great grandma, mom, and aunt have all had it. I am only 20, but my aunt was younger when she got it too. I know I should go to the doctor, but I was just wondering you ladies knew. Oh, and I've had no positive pregnancy tests.

Vote below to see results!